zsp__blas2_8c.html

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<pre>
   Purpose
   =======</pre><p>
<pre>   <a class="el" href="slu__zdefs_8h.html#4f8e25c2e20af0219ad6719db052f3d7">sp_ztrsv()</a> solves one of the systems of equations   
       A*x = b,   or   A'*x = b,
   where b and x are n element vectors and A is a sparse unit , or   
   non-unit, upper or lower triangular matrix.   
   No test for singularity or near-singularity is included in this   
   routine. Such tests must be performed before calling this routine.</pre><p>
<pre>   Parameters   
   ==========</pre><p>
<pre>   uplo   - (input) char*
            On entry, uplo specifies whether the matrix is an upper or   
             lower triangular matrix as follows:   
                uplo = 'U' or 'u'   A is an upper triangular matrix.   
                uplo = 'L' or 'l'   A is a lower triangular matrix.</pre><p>
<pre>   trans  - (input) char*
             On entry, trans specifies the equations to be solved as   
             follows:   
                trans = 'N' or 'n'   A*x = b.   
                trans = 'T' or 't'   A'*x = b.
                trans = 'C' or 'c'   A^H*x = b.</pre><p>
<pre>   diag   - (input) char*
             On entry, diag specifies whether or not A is unit   
             triangular as follows:   
                diag = 'U' or 'u'   A is assumed to be unit triangular.   
                diag = 'N' or 'n'   A is not assumed to be unit   
                                    triangular.</pre><p>
<pre>   L       - (input) SuperMatrix*
	       The factor L from the factorization Pr*A*Pc=L*U. Use
             compressed row subscripts storage for supernodes,
             i.e., L has types: Stype = SC, Dtype = SLU_Z, Mtype = TRLU.</pre><p>
<pre>   U       - (input) SuperMatrix*
	        The factor U from the factorization Pr*A*Pc=L*U.
	        U has types: Stype = NC, Dtype = SLU_Z, Mtype = TRU.</pre><p>
<pre>   x       - (input/output) doublecomplex*
             Before entry, the incremented array X must contain the n   
             element right-hand side vector b. On exit, X is overwritten 
             with the solution vector x.</pre><p>
<pre>   info    - (output) int*
             If *info = -i, the i-th argument had an illegal value.
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<a class="anchor" name="fb6f65890b5348dc1692d01b087be35d"></a><!-- doxytag: member="zsp_blas2.c::zlsolve" ref="fb6f65890b5348dc1692d01b087be35d" args="(int, int, doublecomplex *, doublecomplex *)" --><p>
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          <td class="md" nowrap valign="top">void zlsolve           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname" nowrap> <em>ldm</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>ncol</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>M</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>rhs</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
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The unit lower triangular matrix is stored in a 2D array M(1:nrow,1:ncol). The solution will be returned in the rhs vector.     </td>
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<a class="anchor" name="1165292a4e2a6c282638868bd503fb7a"></a><!-- doxytag: member="zsp_blas2.c::zmatvec" ref="1165292a4e2a6c282638868bd503fb7a" args="(int, int, int, doublecomplex *, doublecomplex *, doublecomplex *)" --><p>
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          <td class="md" nowrap valign="top">void zmatvec           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname" nowrap> <em>ldm</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>nrow</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>ncol</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>M</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>vec</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>Mxvec</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
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The input matrix is M(1:nrow,1:ncol); The product is returned in Mxvec[].     </td>
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<a class="anchor" name="c9798dda11fa387039351d70fa59ce3b"></a><!-- doxytag: member="zsp_blas2.c::zusolve" ref="c9798dda11fa387039351d70fa59ce3b" args="(int, int, doublecomplex *, doublecomplex *)" --><p>
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          <td class="md" nowrap valign="top">void zusolve           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname" nowrap> <em>ldm</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>ncol</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>M</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>rhs</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
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The upper triangular matrix is stored in a 2-dim array M(1:ldm,1:ncol). The solution will be returned in the rhs vector.     </td>
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